EDIT - added a + each to Lucky and TechT and for the following reasons..

Lucky - Had several questions and contacted lucky Tech. I got answers very quickly (2 day lapse) and the answers corrected the problem...and other questions were answered as well. + goes to Customer Service.

TechT - I bought a used (L6) bolt privately on another forum and my initial review of this bolt is just awesome. I can't really post this review here because it'd probably be considered spam as it only pertains to my Ion...but TechT makes different products for different markers and many of us own different guns (that aren't Spyders). + goes to product construction, weight and air flow.